Allegro® ACS711 为
The device contains a linear Hall sensor integrated circuit with a copper current path close to the surface of the wafer. The current applied through this copper current path generates a magnetic field that can be sensed by the integrated Hall IC and converted into a proportional voltage. By bringing the magnetic signal closer to the Hall sensor, the device accuracy is optimized.
The slope of the device's output is proportional to the current from IP+ to IP– (pins 1 and 2 to pins 3 and 4). With internal resistance of 0.6 mΩ (EX package) and 1.2 mΩ (LC package), this conduction path provides a non-intrusive measurement interface for applications requiring energy savings.
While the termination of the current path is insulated from the sensor IC wires, the ACS711 is ideal for low-end current-sensing applications, providing sufficient internal creepage and isolation space for low AC or DC operating voltage applications. The size of the copper wire allows the device to operate under overcurrent conditions of up to 5×.
The ACS711 is available in small surface-mount packages: SOIC8 and QFN12. The pin frame is 100% matte tin plated and is compatible with standard lead-free printed circuit board assembly processes. The device does not contain lead inside, except for the current RoHS-exempt high-temperature leaded solder balls used in the flip method. The device is fully calibrated prior to shipment.
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无需外部感应电阻，单独封装方案
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更低功率损耗：
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0.6 mΩ 内部导体电阻（EX 封装）
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1.2 mΩ 内部导体电阻（LC 封装）
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经济型低端及高端电流感应
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输出电压与交流或直流电流成比例
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±12.5 A 和 ±25 全刻度感应范围（LC 封装）
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±15.5 A 和 ±31 全刻度感应范围（EX 封装）
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过流fault跳闸，在 100% 满标电流时锁定
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低噪音模拟信号路径
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100 kHz 带宽
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小型低厚度 SOIC8 和 QFN 封装
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3.0 至 5.5 V, 单电源工作
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集成静电屏蔽，保持输出稳定
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出厂时已经校准，确保精确度
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极度稳定的输出偏移电压
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零磁滞
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电源电压的成比例输出
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